2K Games announcesJoe's Adventures, new story-based DLC for Mafia II planned for release later this year. Here's a bit on what this will add to the open-world crime sequel:

Joe’s Adventures offers an engaging narrative and allows players to explore new locations, including a train station, the cathouse, a boat yard, a seasonally changing lakefront and some never-before-seen buildings in Empire Bay. This exciting new chapter in the Mafia II saga includes new clothing, collectibles and even more classic 40’s and 50’s music. In addition to the story-based missions, Joe’s Adventures opens up a slew of optional city-based quests packed with arcade action gameplay and a points-based system that allows players to move up the ranks on the online leaderboard through combos and multiplier bonuses. Deadly executions by head shot or charged explosives rack up points, and precision-timed vehicular power slides, lofty jumps and feats of supercharged speed maintain the adrenaline-charged fun for extensive replayability.